Monitoring power status

ABSTRACT

Methods, systems, and apparatus, including computer programs encoded on storage devices, for detecting the power status of an electrical device. In one aspect, an apparatus includes a device that comprises a radio transmitter and a sensor configured to detect the power status of the device. The power status may include information that is indicative of whether the device is powered on or off. The apparatus may also include a processor and a data storage device storing a device identifier associated with the device, and instructions that are operable, when executed by a processor, to cause the processor to perform operations. The operations may include receiving data indicating the power status of the device detected by the sensor, receiving a request for the power status of the device, and transmitting, using the radio transmitter, the device identifier associated with the device and the power status associated with the device.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation of U.S. application Ser. No.14/961,333, filed Dec. 7, 2015, the contents of which are incorporatedby reference herein.

BACKGROUND

Homes may typically contain many different types of electrical devices,many of which may play an important role in facilitating many differentaspects of a typical person's daily life. These electrical devices mayinclude appliances such as, for example, clothes irons, hair curlingirons, hair straightening tongs, electric space heaters, refrigerators,televisions, or the like. Such electrical devices may typically requirea connection to an electrical outlet in order to function for theirintended purpose. Though each of the aforementioned electrical devicesmay provide a specific utility that may help to accommodate aspects of aperson's daily life, misuse of such electrical devices may havesignificant ramifications—some of which could be hazardous to a person,or the person's property.

SUMMARY

According to at least one aspect of the subject matter disclosed by thisspecification, a method, system, and apparatus, including computerprograms encoded on storage devices, are disclosed that mayautomatically detect the power status of an electrical device. In someaspects, the subject matter in this specification may be embodied in adevice that includes a radio transmitter and a sensor configured todetect the power status of the device. The power status may includeinformation that is indicative of whether the device is powered on oroff. The device may also include one or more processors, and one or moredata storage devices storing (i) a device identifier associated with thedevice, and (ii) instructions that are operable, when executed by theone or more processors, to cause the one or more processors to performoperations. The operations may include receiving data indicating thepower status of the device detected by the sensor, receiving a requestfor the power status of the device, and transmitting, using the radiotransmitter, the device identifier associated with the device and thepower status associated with the device. In some implementations, thedevice identifier and the power status may be transmitted in a singlemessage.

Other versions of the corresponding of subject matter disclosed by thisspecification may include an electrical plug for a device that includesa plug housing, electrical contacts attached to the plug housing, and apower status reporting device within the plug housing. The power statusreporting device may include a radio transmitter and a sensor configuredto detect the power status of the device. The power status may includeinformation that is indicative of whether the device is powered on oroff. The power status reporting device may also include one or moreprocessors, and one or more data storage devices storing (i) a deviceidentifier associated with the device, and (ii) instructions that areoperable, when executed by the one or more processors, to cause the oneor more processors to perform operations. The operations may includereceiving data indicating the power status of the device detected by thesensor, broadcasting, using the radio transmitter, an advertisementmessage indicating the presence of the power status reporting device,after broadcasting the advertisement message, receiving a request forinformation from the power status reporting device, and transmitting,using the radio transmitter and in response to the request, a powerstatus message that includes the device identifier associated with thedevice and the power status associated with the device.

These and other versions each may optionally include one or more of thefollowing features. For instance, the sensor may be configured to detectwhether current is flowing to the device. The sensor may also beconfigured to determine the power status of the device based on whethercurrent is flowing to the device. The sensor may be configured to detectwhether current is flowing into the device by detecting the existence ofa magnetic field.

In some aspects, the device may include an electrical plug, wherein theradio transmitter, the sensor, the one or more data storage devices, andthe processor are each housed within the electrical plug. Alternatively,or in addition, the device may include a battery that is housed in theplug. In such instances, the device may include recharging circuitry inthe plug that is configured to recharge the battery using inductivecoupling with a conductor carrying alternating current through the plug.

In other implementations, the device may include a data storage devicethat stores information associated with the device identifier thatindicates a particular device classification type, wherein theparticular device classification type indicates whether the device is adevice that (1) should be left powered on, or (2) should be left poweredoff. In some implementations, the storage device may includeinstructions that, when executed, perform operations that includetransmitting the particular class using the radio transmitter.

In yet other implementations, the storage device may includeinstructions that, when executed, perform operations that includecalculating an average amount of power used by the device over a periodof time, and transmitting the calculated average amount of power usingthe radio transmitter.

Aspects of the specification described herein may be integrated withinportions of a device that include a hair dryer, a clothes iron, acurling iron, or a refrigerator, among other devices.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a contextual diagram showing features of a system fordetecting whether devices are powered on.

FIG. 2 is a block diagram showing an example of a system that mayfacilitate detection of powered-on electrical appliances.

FIG. 3 is an example of a status monitoring device that has beenintegrated into a plug of an electrical device.

FIG. 4A-4C are examples of user interfaces that may be provided by amobile application of a central role device.

FIG. 5 is a flowchart of a process that may facilitate detection ofpowered-on electrical appliances.

FIG. 6 is flowchart of a process that may be employed by a central roledevice.

DETAILED DESCRIPTION

According to at least one aspect of the subject matter disclosed by thisspecification, a method, system, and apparatus, including computerprograms encoded on storage devices, are disclosed that mayautomatically detect powered on electrical devices. The detection ofpowered on electrical devices may help to reduce risks due to the misuseof such electrical appliances. Misuse of an electrical device mayinclude, for example, leaving an electrical device plugged into anelectrical outlet and powered-on for an excessive amount of time whilethe electrical device is no longer in use. For some devices, such asclothes irons and other devices with heating elements, accidentallyleaving the device powered on could cause a fire or other damage. Riskof loss due to the misuse of an electrical device may be reduced by, forexample, transmitting a power status alert to a user associated with theelectrical device, based on power status information received from aradio transmitter associated with an electrical device.

In some implementations, components integrated into an electrical deviceare configured to detect and transmit the power status of the electricaldevice. The integrated components may include, for example, a sensor anda radio transmitter. The sensor may detect the power status of anelectrical device by determining whether the electrical device ispowered on or powered off. For example, the sensor may detect whetherthe electrical device is powered on based on determining whether currentis flowing to the electrical appliance. The radio transmitter maytransmit information associated with the electrical device, such as adetected power status and a device identifier. The device identifier maybe, for example, characters that uniquely identify the electricaldevice.

A central role device may receive information from radio transmitter,and generate an alert, as necessary, to inform a user of the powerstatus of electrical devices. For example, a mobile phone or otherdevice may receive Bluetooth beacons from appliances, determine that apotentially dangerous appliance is currently powered on, and alert theuser. Based on the alerts, the user may identify one or multipleelectrical devices that need to be powered on or powered off and changethe power status associated with the electrical device(s).

In some implementations, radio transmitter can alert a central roledevice that its associated electrical device is powered off. Forexample, a refrigerator is usually intended to remain powered on so itcan preserve the food inside, so it may be valuable for a person to benotified in the event that a refrigerator has been powered off.

In situations in which the systems discussed here collect personalinformation about users, or may make use of personal information, a usermay be provided with controls allowing the user to make an election asto both if and when systems, programs or features described herein mayenable collection of user information (e.g., information about a user'ssocial network, social actions or activities, profession, a user'spreferences, or a user's current location), and if the user is sentcontent or communications from a server. In addition, certain data maybe treated in one or more ways before it is stored or used, so thatpersonally identifiable information is removed. For example, a user'sidentity may be treated so that no personally identifiable informationcan be determined for the user, or a user's geographic location may begeneralized where location information is obtained (such as to a city,ZIP code, or state level), so that a particular location of a usercannot be determined. Thus, the user may have control over whatinformation is collected about the user, how that information is used,and what information is provided to the user.

FIG. 1 is a contextual diagram showing features of a system 100 fordetecting whether devices are powered on. The example of FIG. 1 showsthe system 100 in the context of a home 110. System 100 may include oneor multiple central role devices 120, 122, a remote device 124, one ormultiple electrical devices 130, 132, 134, and one or multiple statusmonitoring devices 140, 142, 144. In some implementations, the statusmonitoring devices 140, 142, 144 send information via Bluetooth messagesor beacons and act as peripheral devices with respect to a central roledevices 120, 122. A status monitoring device may be integrated into anyportion of the corresponding electrical device. In some implementations,a status monitoring device 140 may be integrated into the electricalplug 150 of an electrical device 130.

Each status monitoring device 140, 142, 144 may directly communicatewith one or multiple central role devices 120, 122 via one or multiplecommunication links 160 a, 160 b. Communication links 160 a, 160 b mayinclude, for example, one or multiple wireless short-range radiointerfaces. For example, each status monitoring device 140, 142, 144 mayinclude a Bluetooth transceiver that exchanges messages with a phone,network router, or other central role device. Communication may occur inone or multiple frequency bands.

Alternatively, or in addition, each status monitoring device 140, 142,144 may indirectly communicate with at least one remote device 124 via acommunication link 170 a, 170 b, 170 c. Communication links 170 a, 170b, 170 c may include, for example, one or more wired or wirelessnetworks including, for example, a LAN, WAN, 3G network, 4G network, theInternet, mesh network or the like. For instance, a status monitoringdevice 140, 142, 144 may communicate with a first central role device,such as wireless network router 122, via communication link 160 b, andthen the wireless network router 122 may relay the communication(s)received from each respective status monitoring device 140, 142, 144 toa remote device such as, for example, remote device 124. Relayingcommunications from one or multiple status monitoring devices 140, 142,144 in the manner described above may be particularly beneficial when auser of a central role device 120 has traveled away from home 110 and isoutside the range of communication link 160 a, 160 b. Alternatively, orin addition, wireless network router 122 may relay communicationsreceived from one or multiple status monitoring devices 140, 142, 144 toone or multiple cloud based services 190. Cloud-based services may beconfigured to receive device information from one or more statusmonitoring devices 140, 142, 144, analyze the received deviceinformation, and provide alerts to one or central role devices based onthe analysis.

Central role devices 120, 122 may include any device that is configuredto directly receive communications transmitted by one or multiple statusmonitoring devices 140, 142, 144. For example, a central role device mayinclude a desktop computer, laptop computer, wired or wireless networkrouter, tablet computer, smartphone, smartwatch, one or multiplecomputers that drive a heads-up display associated withsmart-glasses/smart-contact lenses, or the like.

Status monitoring devices 140, 142, 144 may include any device that hasaccess to data needed by a central role device 120, 122. Statusmonitoring devices 140, 142, 144 may be configured to directly, orindirectly, communicate such data to one or multiple central roledevices 120, 122. Note that in certain instances, a particularelectrical device may be both a central role device and a statusmonitoring device. For instance, a television 132 may be associated witha status monitoring device 142 that obtains and transmits the powerstatus of television 132. Alternatively, or in addition, a televisionmay be associated with a central role application that receives datatransmitted from one or multiple status monitoring devices 140, 142,144. The television's central role application may process such receiveddata in order to generate one or multiple alerts to a user that arebased on the power status of one or multiple electrical devices 130,132, 134.

A status monitoring device 140 may include a sensor 140 a, one ormultiple processors 140 b, one or more data storage devices 140 c, aradio transmitter 140 d, and a battery 140 e. Sensor 140 a may beconfigured to determine the power status of electrical device 130. Forinstance, sensor 140 a may determine whether electrical device 130 ispowered on or powered off. Sensor 140 a may determine whether anelectrical device 130 is powered on or powered off by detecting whetheror not an electrical current is flowing from the electrical outlet 180to electrical device 130. For example, sensor 140 a may include aninductive sensor that has a coil to detect the presence of a magneticfield when current is flowing through a wire. Thus, the inductive sensormay determine that the device is powered on when a magnetic field isdetected and current is induced in the coil. Alternatively, theinductive sensor may determine that the device is powered off when amagnetic field is not detected, and thus current is not induced in thecoil. The output of sensor 140 a may be analog or digital. Circuitry ofthe sensor may generate a binary output that indicates whether theelectrical device is powered on based on whether induced current in thesensor coil is above a threshold. Alternatively, or in addition, theoutput of sensor 140 a may indicate, based on the induced current in thesensor, an amount of current flowing to the electrical device. Thisamount of current can be provided as an analog or digital value that isrepresentative of, for example, a current value in Amps or milliAmps.One or multiple processors 140 b may execute instructions that mayobtain, or otherwise receive, output readings from sensor 140 atpredetermined intervals of time. For example, processor(s) 140 b mayobtain an output reading from sensor 140 a every second, every 5seconds, every 10 seconds, or the like.

Storage device 140 c may include one or multiple storage devices.Storage device 140 c may be configured to store information associatedwith electrical device 130. Information associated with electricaldevice 130 may include, for example, power-status outputs, a deviceidentifier, a human-understandable device name, a device classificationtype, the time the electrical device last used power, or the like. Thepower-status outputs may include one or multiple outputs from sensor 140a. For instance, storage device 140 may store the most recentpower-status output of sensor 140 a and/or varying levels of historicalpower-status outputs such as, for example, power status outputs for thelast week, last month, or even every power status output of sensor 140a. Stored power-status information may be used to calculate, forexample, the average power used by an electrical device over apredetermined period of time, e.g., the last hour, the last day, and soon.

The device identifier may include any unique string of one or multiplecharacters that may be capable of uniquely identifying a particularelectrical device. For instance, the device identifier may be a 128-bituniversally unique identifier (UUID). Such a device identifier may beassigned to the electrical device 130 by the manufacturer and stored inthe storage device 140 c prior to purchase of the electrical device 130.Alternatively, a device identifier may be assigned and stored later. Thehuman-understandable device name may include text that indicates thedevice type, brand, or model name, for example, “Clothes Iron”, “ClothesIron, model 1015”, or the like. Because the device identifier, name,other data can be already stored when the electrical device 130 ispurchased by a user, the monitoring device 140 can broadcast itsidentity without the need for any set up or input from the user.

The device classification type may provide an indication of the natureof the device such as, for example, to indicate whether the electricaldevice should remain powered on when not in use, or whether theelectrical device should remain plugged into an electrical outlet 180when not in use. For example, a clothes iron may be associated with adevice classification type or tag that indicates that the clothes ironshould not remain powered on when not in use. For devices associatedwith such a device type or tag, a central role device may provide analert to a user if it is determined that the device has been powered onlonger than a predetermined amount of time, or when an event occurs,such as detecting that the user has left the house 110. Similarly, adevice classification may indicate whether the electrical device 130should be left plugged into the electrical outlet 180 when not in use.Using the classification and sensor data indicating whether theelectrical device 130 is plugged in, a central role device may alert auser if an electrical device that should not remain plugged in has beenplugged in for more than a threshold amount of time or when certainconditions are detected. Some devices are intended to remain powered onor plugged in for an extended period of time. For example, theclassification type or tag for a device such as a refrigerator mayindicate that the refrigerator should be left plugged into an electricaloutlet 180 at all times. For devices associated with such a device typeor tag, a central role device may provide an alert to a user if, forexample, it is determined that the electrical device 130 is notconnected to power, is currently powered on, or has not powered on forat least a predetermined amount of time.

Other types of device classification types or tags may be stored. Forexample, data indicative of the time the electrical device last usedpower may be stored. Such data may include, for example, a timestampthat is indicative of the last time that sensor 140 a last detected thatthe electrical device was powered on, the time sensor 140 a lastdetected that current flowing to the electrical device, or the like.

Radio transmitter 140 d may be configured to transmit any of the one ormultiple types of device information that are maintained in storagedevice 140 c. For instance, radio transmitter 140 d may transmitpower-status outputs, a device identifier, a human-understandable devicename, a device classification type, average power usage, or the like.The device information may be transmitted together in a single messageor spread across multiple messages. Radio transmitter 140 d may beconfigured to repeatedly advertise the presence of the status monitoringdevice 140, which may suggest that power status information is availablefor the electrical device 130. For instance, radio transmitter 140 d maybe configured to periodically broadcast such advertisements multipletimes per second, every second, once every 3 seconds, once every 5seconds, or the like. A central role device 120, 122, after detectingthe advertisement, may request information that relates to a particularelectrical device 130, 132, 134. In at least one aspect of the presentdisclosure, the radio transmitter 140 d may include a small BluetoothLow Energy wireless beacon. Alternatively, however, other low-powered RFdevices may be utilized to implement the functionality of the radiotransmitter 140 d.

Status monitoring device 140 may also include a battery 140 e. Battery140 e may allow status monitoring device 140 to remain powered on at alltimes. Accordingly, when utilizing battery 140 e for power, statusmonitoring device 140 may be able to continuously advertise the powerstatus of a particular electrical device, even when the particularelectrical device is not plugged into an electrical outlet 180. When aBluetooth Low Energy beacon or another low-powered RF device is used toimplement functionality of the radio transmitter 140 d, the statusmonitoring device 140 may be able to remain powered for extended periodsof time on a single watch battery. Alternatively, or in addition,battery 140 e may be rechargeable. In accordance with certain aspects ofthe present disclosure, the status monitoring device may includerecharging circuitry to recharge the battery 140 e. Recharging circuitrymay recharge the battery 140 e using current induced in coils that areinductively coupled to the wires that carry power from the electricaloutlet 180 to the electrical device 130.

FIG. 2 is an example of a system 200 that may facilitate automaticdetection of powered-on electrical appliances. System 200 may includeone or multiple electrical devices 210 a, 210 b, . . . 210 n, one ormultiple status monitoring devices 220 a, 220 b, 220 n, short rangecommunication links 230 a, 230 b, . . . 230 n, one or multiple centralrole devices 240 a, 240 b, a remote device 240 c, a network 250, andserver 260. Network 250 may include one or multiple networks such as,for example, a LAN, WAN, 3G network, 4G network, the Internet, meshnetwork or the like.

Each electrical device 210 a, 210 b, . . . 210 n may include at leastone corresponding status monitoring device 220 a, 220 b, . . . 220 n, asdepicted in FIG. 2. Status monitoring devices 210 a, 210 b, 210 n mayhave the features of status monitoring devices 140, 142, 144 that weredescribed with reference to FIG. 1.

Each status monitoring device 210 a, 210 b, . . . 210 n may beconfigured to advertise its presence to a central role device. In someimplementations, a status monitoring device indicates that it possessesdevice information that is associated with its corresponding electricaldevice 210 a, 210 b, . . . 210 n using an advertisement 270. Statusmonitoring devices 220 a, 220 b, . . . 220 n may be configured toperiodically transmit advertisements such as, for example, advertisement270, using a radio transmitter, regardless of whether a particularcentral role device is reading or requesting device informationassociated with an electrical device that corresponds to a particularadvertisement 270. An advertisement 270 may be a basic message that mayinclude just enough detail to indicate to a central role device 240 a,250 b that the status monitoring device includes additional informationrelated to a particular device. For instance, an advertisement maysimply include a tag that classifies the message as an advertisement,and a device identifier. Due to the small size of the advertisement 270,a very small amount of power is needed for transmission, allowing astatus monitoring device to transmit advertisements consistently forextended periods while on battery power. However, it should becontemplated that other types of device information may be includedwithin advertisement 270, as necessary.

A central role device 240 a, 240 b may be configured to receive anadvertisement 270 and request additional information from the statusmonitoring device identified by the advertisement 270. For example, thecentral role device 240 a, 240 b may send a response message 272, viaBluetooth or another short-range RF communication interface, to one ormore status monitoring devices. For instance, the response message 272may be transmitted from the central role device 240 a, 240 b to thestatus monitoring device 220 a, in order to request the power statusassociated with electrical device 210 a. In response to the responsemessage 272, status monitoring device 220 a may transmit a power statusmessage 274 to the requesting central role device that includes thepower status of electrical device 210 a. Alternatively, or in addition,power status message 274 may include all, or a subset, of theinformation maintained in a status monitoring storage device's datastorage device 140 c.

The request message 272 may be transmitted by a central role device 240a, 240 b periodically based on a predetermined amount of time, based onone or multiple predetermined activity triggers, or the like. Forexample, the mobile application may periodically request additionalinformation associated with one or multiple advertisements 270 based onthe expiration of a predetermined amount of time such as, for example,every 10 seconds, every minute, every 5 minutes, or the like.Alternatively, or in addition, the mobile application may be configuredto selectively request 272 additional information about an advertisement270 in accordance with a predetermined activity trigger. For example, amobile application may be configured to request additional informationassociated with a status monitoring device after a person opens, ormanually refreshes, a mobile application for viewing power statusinformation. The mobile application may be executed on a central roledevice, for example, if the central role device is the user'ssmartphone. As another example, the mobile application may be executedon another device, for example, when a router in the user's home actsthe central role device and the user uses the mobile application on hisphone remotely.

A status monitoring device such as, for example, status monitoringdevices 210 a, 210 b, . . . 210 n, may directly communicateadvertisements 270 and/or power status messages 274 to one or multiplecentral role devices such as, for example, central role devices 240 a,240 b using short range communication links 230 a, 230 b. In someimplementations, multiple devices coordinate reception and processing ofpower status information. For example, different central role devices240 a, 240 b may be located in different areas and may thus communicatewith different sets of devices. The central role devices 240 a, 240 bmay also provide information to other devices, such as a server 260 or aremote device 240 c, so that power status information is availableremotely.

The power status message 274 provided in response to a central roledevice's 240 a, 240 b request 272 may include one or multiple differenttypes of device information that each status monitoring device stores ina corresponding data storage device such as, for example, storage device140 c. For instance, power status message 274 may include a power status274 a, a device identifier 274 b, a human understandable name 274 c, adevice classification type 274 d, a time the electrical device last drewpower 274 e, or the like. In certain instances, power status message 274may not include a human understandable name 274 c or a deviceclassification type 274 d. In such instances, mobile application may mapa device identifier 274 b, or other device attribute, to a humanunderstandable name and/or device classification type maintained usinginformation locally available to the central role device 240 a, 240 b.Alternatively, or in addition, power status message 274 may also includeinformation that may be indicative of the power consumption of aparticular electrical device. For example, power status message 274 mayinclude the current rate of power consumption of an electrical device,past power consumption of an electrical device for a particular periodof time, or the like. Alternatively, or in addition, power statusmessage 274 may also include any GATT characteristic that may beinformative regarding any characteristic of a particular electricaldevice 210 a, 210 b, 210 n.

While a user is at home, the user's phone or other device may receiveand process power status messages 274 as a central role device. In someinstances, a user will desire to obtain power status information for hiselectrical devices from a remote location, for example, while the useris away from home. When a remote device 240 c, such as a user's phone,resides outside the maximum range 280 of short range communication links230 a, 230 b, the remote device 240 c may receive power statusinformation indirectly through one or more other devices. For instance,status monitoring device 220 a may transmit a power status message 274to router 240 b, and then information in the power status message 274may be relayed by router 240 b to a remote device 240 c through network250, e.g., via one or more wired or wireless communication links 290.

In some implementations, a central role device 240 a, 240 b providespower status information to a server 260 via network 250. Server 260 mayprovide a cloud-based service that analyzes received power statusinformation, and may then provide alerts to help minimize the risk ofloss due to misuse of electrical devices. For example, the server 260may analyze received power status information to determine whether eachmonitored device has an appropriate power status. From the data in apower status message 274, the server 260 may evaluate the deviceclassification to determine whether a particular electrical deviceshould remain powered on, and may evaluate the power status to determinewhether the current status matches what is indicated by the deviceclassification. If the current status is different from what the deviceclassification indicates, the server 260 can send a message to theremote device 240 c alerting the user which electrical device has aninappropriate power status. In some implementations, a central roledevice or a remote user device analyzes the power status information anddetermines whether to alert a user, in addition to or instead ofanalysis by the server 260.

In some implementations, the server 260 may determine an urgency of analert to a user based on a device classification, device type, or otherdevice information. For example, although a television generally doesnot remain powered on for extended periods, there is little harm in thetelevision remaining on, and the server 260 may determine that an alertis not needed. The user may view the status with a mobile application,but may not need to be notified immediately. On the other hand, if theserver 260 determines that a device that is powered on is one with aheating element, such as a cooktop, a clothes iron, a curling iron,etc., or is a device classified as potentially dangerous, the server 260can send an alert and may indicate that urgent attention is needed.

In some implementations, a central role device 240 a, 240 b or server260 may provide alerts to a user device, such as a smartphone, remotedevice 240 c, or other device. The server 260 may be configured toreceive and monitor device information in real-time, as received from acentral role device 240 a, 240 b. The server 260 then providesinformation, including alerts, regarding the power status of one or moreelectrical devices. Based on an analysis of the received deviceinformation, server 260 may be configured to transmit an alert to a userdevice to notify a person when an electrical device, such as a clothesiron, has been powered on in excess of a predetermined amount of time.Similarly, server 260 may transmit an alert to a user device to notify aperson in certain instances wherein an electrical device such as, forexample, a refrigerator has been powered off in excess of apredetermined amount of time.

In some implementations, alerts may be location-based. For instance,server 260 may be configured to transmit alerts to a user device basedon a determination that the user device has left a person's home, hotel,office, or other building. As an example, the server 260 may determinewhen the user device of a particular user has left the monitored area,e.g., the user's home, where the electrical devices are located. Whenthe server 260 determines that the user has left the monitored area, theserver 260 may assess the most recent power status information. Forexample, the server 260 may request updated power status informationfrom the central role device 240 a, 240 b. If analysis of the powerstatus information indicates one or more multiple electrical devices inthe person's home, hotel, office, or other building have a problematicpower status, the server 260 sends an alert to the user device givingthe person the opportunity to correct the power status associated one ormultiple electrical devices before traveling very far from theelectrical device that needs attention. The alerts may contain all, or asubset, of the information maintained by a status monitoring deviceregarding a particular electrical device.

The location of the user device may be determined in any of variousways. For example, the central role device 240 a, 240 b and the userdevice may communicate, e.g., via Bluetooth, Wi-Fi, or other short-rangewireless communication, when they are in proximity. When the connectionis broken, or when the devices do not communicate for a threshold periodof time, the central role device 240 a, 240 b, the user device, or bothmay notify the server 260 to indicate that the devices are likely nolonger in proximity. Thus, the server 260 may transmit an alert based ona determination that the user device has moved beyond the maximum rangeof short-range communication links 230 a, 230 b, 230 c. As anotherexample, the user device may include a GPS receiver and may send anotification to the server 260 when the user device leaves an area, suchas the user's home. Finally, the user device may determine that it hasleft the monitored area when it no longer receives advertisements fromthe electrical devices in the monitored area, and the user device mayinform the server that it has left the monitored area.

FIG. 3 is an example of a status monitoring device 310 that has beenintegrated into a plug 300 of an electrical device. Status monitoringdevice 310 may include, for example, a circuit board 311, a battery 312,a processor 313, a storage device 314, a radio transmitter 315, and acurrent sensor 320.

In the example of FIG. 3, the status monitoring device 310 is integratedinto a plug 300 of an electrical device. The status monitoring device310 may include a circuit board 311 that may provide interconnectionsbetween one or multiple of the other components of the status monitoringdevice 310. Battery 312 may provide power to the status monitoringdevice. Battery 312 may allow status monitoring device 310 to function,for example, when plug 300 is not coupled to an electrical outlet. Insome implementations, circuit board 311 may also include rechargingcircuitry to recharge battery 312. A processor 313 and storage device314 may be mounted on the circuit board 311. Processor 313 may executeinstructions that facilitate operation of the status monitoring device.For instance, processor 313 may execute instructions that performoperations such as capturing an output reading of current sensor 320,storing power status readings obtain by current sensor 320 in storagedevice 314, and transmitting advertisements, power status readings,and/or other device information stored in storage device 314 using radiotransmitter 315. In at least one aspect of the present disclosure, radiotransmitter 315 may be a Bluetooth Low Energy beacon. Plug 300 may alsoinclude a relay that may be responsive to an instruction from a mobileapplication associated with a central role device. For instance, inresponse to an instruction from a mobile application associated with acentral role device, the relay may break the circuit established whenplug 300 is inserted into an electrical outlet in order to cut off thesupply of current to the electrical device, forcing the electricaldevice to power down.

Current sensor 320 may include an inductive sensor that comprises acoil. Current sensor 320 may be configured such that the wire 330 thatprovides current to the electrical device may pass through the coil. Thecurrent sensor 320 may detect a power status associated with the devicebased on the presence of a magnetic field caused by the flow of AC powerto the attached electrical device. These magnetic fields may induce acurrent in the current sensor 320 which can be used to determine anamount of current flowing to the attached electrical device. Forinstance, a magnetic field may be detected by current sensor 320 whencurrent is flowing through the wire 330. Accordingly, in such instances,current sensor 320 may determine that the electrical device is poweredon. Alternatively, when no current is flowing through the wire 330, nomagnetic field may be detected by current sensor 320. Accordingly, insuch instances, current sensor 320 may determine that the electricaldevice is powered off.

Status monitoring device 310 may also be configured to determine theamount of power consumed by an electrical device 330. The power consumedby an electrical device may be determined over a predetermined period oftime as a function of the input voltage and current detected by currentsensor 320 associated with an electrical device 330. Status monitoringdevice 310 may be configured to store a power consumption determination,or each power consumption determination, in storage device 314. Statusmonitoring device 310 may analyze power consumption reads maintained instorage device 314 in order to determine the amount of power used by anelectrical device 330, time periods when electrical device 330 ispowered on/powered off, or the like.

Status monitoring device 310 may be configured to communicate with adevice 340 in the manner described with respect to FIG. 2. Accordingly,any of the data maintained by storage device 314 may be provided todevice 340 for display via application 342 in order to inform a user ofdevice 314 regarding the power status one or multiple electricalappliances.

FIG. 4A-4C are examples of user interfaces 400, 410, 420 that may beprovided, for example, by a mobile application of a user device, a webpage, or other user interface.

In the example of FIG. 4A, the user interface 400 of the mobileapplication may provide a display that includes each electrical deviceresiding within a user's home. Each electrical device displayed by userinterface 400 may be associated with a device name. The device name foreach respective electrical device displayed by user interface 400 mayinclude, for example, a human-understandable device name 410 a, 410 b,410 c, 410 d as shown in FIG. 4A. User interface 400 may provide agraphical power status indicator 420 a, 420 b, 420 c, 420 d for eachelectrical device that is displayed that may facilitate a quick and easydetermination of whether or not an electrical device is associated witha problematic power status. For instance, a device that is safelypowered off, or otherwise associated with a non-problematic powerstatus, may be associated with a graphical indicator of a first color asshown with respect to power status indicator 420 a. For example, agraphical indicator associated with a non-problematic power status mayinclude, for example a “green dot” next to the device name.Alternatively, for example, a device that is associated with apowered-on status when a device is not in use, or some other problematicpower status, may be associated with a graphical indicator that is adifferent color than the first color as shown with respect to 420 b. Forexample, a graphical indicator associated with a problematic powerstatus may include, for example, a “red dot” next to the device name.The graphical power status indicator may be generated by the mobileapplication based in part, for example, on an analysis of an electricaldevice's power status and/or the electrical device's deviceclassification type. Alternatively, or in addition, the graphical powerstatus indicator may be generated based on an instruction received fromthe server 260 after the server 260 analyzes an electrical device'spower status and/or the electrical device's classification type. Thoughthe example graphical power status indicators are set forth herein as a“green dot” and a “red dot,” it should be appreciated that other typesof graphical power status indicators may be used such as, for example,various icons, font types/sizes, highlighting, emojis, and/or the like.Similarly, it should be appreciated that the graphical power indicatorsdescribed above may be displayed in any portion of user interface 400 inorder to convey the power status of an electrical device to a user.

Each displayed electrical device may be expandable in order to displayadditional information 430 related to the device. Such additionalinformation 430 may be displayed upon the selection of a particularelectrical device displayed by user interface 400. The additionalinformation 430 that is displayed may include any device informationthat was received in response to a request 272 for additionalinformation associated with an advertisement 270 or in an alert fromserver 260. The expandable display may also provide a selectable icon440 that may be selected to power down a powered on electrical device.In response to a selection of the selectable icon, the mobileapplication may send an instruction to a communication device associatedwith a relay in plug 300 in order to power down the correspondingelectrical device.

The graphical user interface 400 may be configured to facilitate thecreation of one or multiple customized groups of various electricaldevices currently residing within a person's home, hotel, office, orother building. For example, a person may use a mobile application tocreate a “Home” group which includes a list of all the electricaldevices residing within the person's home, as shown by user interface450 in FIG. 4B. Alternatively, a person may create an alternative“Hotel” group, as shown by user interface 460 in FIG. 4C. A “Hotel”group may include, for example, a group of all the electrical devicesthat a person brought with him on a particular trip, which currentlyreside within the person's hotel room.

Mobile application may provide for a variety of other user interactivefeatures. For example, mobile application may be configured to receivehuman-understandable name that may be associated with a particularelectrical device. Alternatively, or in addition, mobile application mayprovide an interface that facilitates registration of a statusmonitoring device when a user purchases an electrical device. Forexample, an electrical device may be associated with a unique identifierat the time of purchase. The unique identifier may be printed on aportion of the electrical device, included with documentation associatedwith the device, or the like. Then, when a person plugs the electricaldevice into an electrical outlet 180, a central role device may detectan advertisement transmitted by the status monitoring device associatedwith the electrical device. Upon the detection of the advertisement, themobile application may be configured to ask a person whether the devicebelongs to the person. A person may then enter the unique identifierthat was previously obtained in order to demonstrate ownership of thedevice and establish the electrical device as a device that should bemonitored by the person's mobile application. Alternative methods ofdevice registration are also considered to fall within the scope of thepresent disclosure. For example, a user may be use a web browser toaccess a cloud based registration service provided by the server 260.The cloud based registration service may ask a user to input a uniqueidentifier for each electrical device that a person owns and requiremonitoring.

FIG. 5 is a flowchart of a process 500 that may facilitate automaticdetection of powered-on electrical appliances, in accordance with oneaspect of the present disclosure.

Process 500 may begin at 510 by detecting the power status of a device.The power status of the device may be detected by using a sensor 140 a.Sensor 140 a may be configured to detect whether an electrical device ispowered on or powered off. In at least one aspect of the presentdisclosure, sensor 140 a may determine whether an electrical device ispowered on or off by determining whether current is flowing to anelectrical device. For example, the sensor 140 a may be configured todetect whether current is flowing into the device by detecting theexistence of a magnetic field. The power status of an electrical devicemay be stored at 520 in storage device 140 c.

Process 500 may continue at 530 by utilizing a radio transmitter 140 dto transmit advertisements 270, which may be received by one or multiplecentral role devices 120, 122. The advertisement 270 may include a basicmessage that includes a limited amount of information necessary toindicate the presence of the status monitoring device 140, 142, 144, andin some implementations, that the status monitoring device possessespower status information corresponding to a particular electricaldevice. For example, an advertisement 270 may include data indicatingthat the message is classified as an advertisement, and a deviceidentifier.

Process 500 may continue at 540 where a status monitoring device 140,142, 144 may receive a request 272 for additional information associatedwith a particular advertisement. The request for additional informationassociated with a particular advertisement may originate from a centralrole device 120, 122. In some implementations, a user of a remote userdevice 240 c may initiate a request for information, which is providedto a server 260 and relayed to a central role device that communicatesdirectly to status monitoring devices. In response to receiving arequest 272 for additional information, status monitoring device 140,142, 144 may obtain information associated with an electrical deviceincluding, for example, power status information associated with thedevice. Alternatively, however, status monitoring device 140, 142, 144may obtain any information associated with an electrical device that maybe maintained in storage device 140 c associated with a statusmonitoring device.

Process 500 may conclude at 550 by transmitting a power status messageto the central role device 120, 122 that requested additionalinformation associated with a particular advertisement 270. Thetransmitted power status message may include at least a deviceidentifier and a power status. Alternatively, however, the transmittedpower status message may include any information associated with anelectrical device that may be maintained in storage device 140 cassociated with a status monitoring device.

FIG. 6 is flowchart that provides an example of a process 600 thatfacilitates functionality employed by a central role device. In someimplementations, the central role device includes a mobile applicationthat causes a user device, such as a user's phone, to perform theactions of the process 600.

Process 600 may begin at 610 when an advertisement 270 for power statusinformation associated with an electrical device is received by acentral role device 120, 122. The advertisement 270 may include a basicmessage that includes a limited amount of information necessary toindicate to a central role device 120, 122 that the status monitoringdevice 140, 142, 144 possess power status information corresponding to aparticular electrical device. In accordance with at least one aspect ofthe present disclosure, an advertisement 270 may merely include dataindicating that the message is classified as an advertisement, and adevice identifier. In response to the receipt of an advertisement 270,mobile application may transmit, at 620, a request 272 for additionalinformation associated with the status monitoring device that submittedthe advertisement 270.

Process 600 may continue at 630 when the mobile application may receivea power status message from the status monitoring device 140, 142, 144that sent advertisement 270. The power status message 274 may include,for example, a device identifier and power status of an electricaldevice. Alternatively, however, the transmitted power status message mayinclude any information associated with an electrical device that may bemaintained in storage device 140 c associated with a status monitoringdevice.

Process 600 may conclude at 640 when the mobile application generates avisual power status indicator associated with an electrical device. Thegenerated visual power status indicator may be based on the informationreceived in the power status message. For instance, the power statusmessage may include a device classification type that indicates thecorresponding electrical device should not be left powered on when notin use, and a powered on status. Accordingly, the mobile application maygenerate a “red dot,” or other warning indicator, that may be displayedin association with the corresponding electrical device in the graphicaluser interface associated with the mobile application.

Embodiments of the subject matter, the functional operations and theprocesses described in this specification can be implemented in digitalelectronic circuitry, in tangibly-embodied computer software orfirmware, in computer hardware, including the structures disclosed inthis specification and their structural equivalents, or in combinationsof one or more of them. Embodiments of the subject matter described inthis specification can be implemented as one or more computer programs,i.e., one or more modules of computer program instructions encoded on atangible nonvolatile program carrier for execution by, or to control theoperation of, data processing apparatus. Alternatively or in addition,the program instructions can be encoded on an artificially generatedpropagated signal, e.g., a machine-generated electrical, optical, orelectromagnetic signal that is generated to encode information fortransmission to suitable receiver apparatus for execution by a dataprocessing apparatus. The computer storage medium can be amachine-readable storage device, a machine-readable storage substrate, arandom or serial access memory device, or a combination of one or moreof them.

The term “data processing apparatus” encompasses all kinds of apparatus,devices, and machines for processing data, including by way of example aprogrammable processor, a computer, or multiple processors or computers.The apparatus can include special purpose logic circuitry, e.g., an FPGA(field programmable gate array) or an ASIC (application specificintegrated circuit). The apparatus can also include, in addition tohardware, code that creates an execution environment for the computerprogram in question, e.g., code that constitutes processor firmware, aprotocol stack, a database management system, an operating system, or acombination of one or more of them.

A computer program (which may also be referred to or described as aprogram, software, a software application, a module, a software module,a script, or code) can be written in any form of programming language,including compiled or interpreted languages, or declarative orprocedural languages, and it can be deployed in any form, including as astandalone program or as a module, component, subroutine, or other unitsuitable for use in a computing environment. A computer program may, butneed not, correspond to a file in a file system. A program can be storedin a portion of a file that holds other programs or data (e.g., one ormore scripts stored in a markup language document), in a single filededicated to the program in question, or in multiple coordinated files(e.g., files that store one or more modules, sub programs, or portionsof code). A computer program can be deployed to be executed on onecomputer or on multiple computers that are located at one site ordistributed across multiple sites and interconnected by a communicationnetwork.

The processes and logic flows described in this specification can beperformed by one or more programmable computers executing one or morecomputer programs to perform functions by operating on input data andgenerating output. The processes and logic flows can also be performedby, and apparatus can also be implemented as, special purpose logiccircuitry, e.g., an FPGA (field programmable gate array) or an ASIC(application specific integrated circuit).

Computers suitable for the execution of a computer program include, byway of example, can be based on general or special purposemicroprocessors or both, or any other kind of central processing unit.Generally, a central processing unit will receive instructions and datafrom a read-only memory or a random access memory or both. The essentialelements of a computer are a central processing unit for performing orexecuting instructions and one or more memory devices for storinginstructions and data. Generally, a computer will also include, or beoperatively coupled to receive data from or transfer data to, or both,one or more mass storage devices for storing data, e.g., magnetic,magneto optical disks, or optical disks. However, a computer need nothave such devices. Moreover, a computer can be embedded in anotherdevice, e.g., a mobile telephone, a personal digital assistant (PDA), amobile audio or video player, a game console, a Global PositioningSystem (GPS) receiver, or a portable storage device (e.g., a universalserial bus (USB) flash drive), to name just a few.

Computer readable media suitable for storing computer programinstructions and data include all forms of nonvolatile memory, media andmemory devices, including by way of example semiconductor memorydevices, e.g., EPROM, EEPROM, and flash memory devices; magnetic disks,e.g., internal hard disks or removable disks; magneto optical disks; andCD-ROM and DVD-ROM disks. The processor and the memory can besupplemented by, or incorporated in, special purpose logic circuitry.

To provide for interaction with a user, embodiments of the subjectmatter described in this specification can be implemented on a computerhaving a display device, e.g., a CRT (cathode ray tube) or LCD (liquidcrystal display) monitor, for displaying information to the user and akeyboard and a pointing device, e.g., a mouse or a trackball, by whichthe user can provide input to the computer. Other kinds of devices canbe used to provide for interaction with a user as well; for example,feedback provided to the user can be any form of sensory feedback, e.g.,visual feedback, auditory feedback, or tactile feedback; and input fromthe user can be received in any form, including acoustic, speech, ortactile input. In addition, a computer can interact with a user bysending documents to and receiving documents from a device that is usedby the user; for example, by sending web pages to a web browser on auser's client device in response to requests received from the webbrowser.

Embodiments of the subject matter described in this specification can beimplemented in a computing system that includes a back end component,e.g., as a data server, or that includes a middleware component, e.g.,an application server, or that includes a front end component, e.g., aclient computer having a graphical user interface or a Web browserthrough which a user can interact with an implementation of the subjectmatter described in this specification, or any combination of one ormore such back end, middleware, or front end components. The componentsof the system can be interconnected by any form or medium of digitaldata communication, e.g., a communication network. Examples ofcommunication networks include a local area network (“LAN”) and a widearea network (“WAN”), e.g., the Internet.

The computing system can include clients and servers. A client andserver are generally remote from each other and typically interactthrough a communication network. The relationship of client and serverarises by virtue of computer programs running on the respectivecomputers and having a client-server relationship to each other.

While this specification contains many specific implementation details,these should not be construed as limitations on the scope of what may beclaimed, but rather as descriptions of features that may be specific toparticular embodiments. Certain features that are described in thisspecification in the context of separate embodiments can also beimplemented in combination in a single embodiment. Conversely, variousfeatures that are described in the context of a single embodiment canalso be implemented in multiple embodiments separately or in anysuitable subcombination. Moreover, although features may be describedabove as acting in certain combinations and even initially claimed assuch, one or more features from a claimed combination can in some casesbe excised from the combination, and the claimed combination may bedirected to a subcombination or variation of a subcombination.

Similarly, while operations are depicted in the drawings in a particularorder, this should not be understood as requiring that such operationsbe performed in the particular order shown or in sequential order, orthat all illustrated operations be performed, to achieve desirableresults. In certain circumstances, multitasking and parallel processingmay be advantageous. Moreover, the separation of various systemcomponents in the embodiments described above should not be understoodas requiring such separation in all embodiments, and it should beunderstood that the described program components and systems cangenerally be integrated together in a single software product orpackaged into multiple software products.

Particular embodiments of the subject matter have been described. Otherembodiments are within the scope of the following claims. For example,the actions recited in the claims can be performed in a different orderand still achieve desirable results. As one example, the processesdepicted in the accompanying figures do not necessarily require theparticular order shown, or sequential order, to achieve desirableresults. In certain implementations, multitasking and parallelprocessing may be advantageous. Other steps may be provided, or stepsmay be eliminated, from the described processes. Accordingly, otherimplementations are within the scope of the following claims.

What is claimed is:
 1. An electrical plug housing comprising: a radiotransmitter; a sensor configured to (i) detect the power status of adevice that is coupled to the electrical plug housing using a powercable, and (ii) generate information that describes the power status ofthe device, wherein the generated information that describes the powerstatus of the device includes information that is indicative of whetherthe device is powered on or off; one or more processors; and one or moredata storage devices storing (i) information that describes a deviceidentifier associated with the device, (ii) the generated informationthat describes the power status of the device, and (iii) instructionsthat are operable, when executed by the one or more processors, to causethe one or more processors to perform operations comprising: receiving,using the radio transmitter, a request, that originates from a mobileapplication of a user device based on the occurrence of a predeterminedtriggering condition detected by the mobile application, for the powerstatus of the device; obtaining, by the one or more processors, (i)information that describes the device identifier and (ii) the generatedinformation that describes the power status of the device from the oneor more storage devices; and transmitting, using the radio transmitter,one or more messages to the user device that include (i) informationthat describes the device identifier and (ii) generated information thatdescribes the power status of the device, wherein when the one or moremessages are received and processed by the user device, cause the userdevice to generate a graphical power indicator for output on a displayof the user device, wherein the graphical power indicator indicateswhether the device has a problematic power status.
 2. The electricalplug housing of claim 1, wherein the graphical power indicator indicatesthat the device has a problematic power status if the power status ofthe device is to be toggled before a user of the user device leaves aproperty where the device is located.
 3. The electrical plug housing ofclaim 1, wherein the graphical power indicator includes a graphicalelement rendered on the display of the user device, wherein processingof the one or more messages by the user device causes the graphicalelement on the display of the user device to be rendered as a firstcolor that indicates that the device has a problematic power status,wherein the first color of the graphical element is different than asecond color of the graphical element on the display of the user devicewhen the device does have a problematic power status.
 4. The electricalplug housing of claim 1, wherein the graphical power indicator indicatesthat the device does not have a problematic power status if the powerstatus of the device is not to be toggled before a user of the userdevice leaves a property where the device is located.
 5. The electricalplug housing of claim 1, wherein the graphical power indicator includesa graphical element rendered on the display of the user device, whereinprocessing of the one or more messages by the user device causes thegraphical element on the display of the user device to be rendered as asecond color that indicates that the device does not have a problematicpower status, wherein the second color of the graphical element isdifferent than a first color of the graphical element on the display ofthe user device when the user device has a problematic power status. 6.The electrical plug housing of claim 1, wherein the predeterminedtriggering condition detected by the mobile application includes adetermination by the mobile application that the user device has left amonitored location.
 7. The electrical plug housing of claim 6, whereinthe monitored location includes a property where the device is located.8. The electrical plug housing of claim 1, wherein the sensor isconfigured to detect the power status of the device by determiningwhether current is flowing through at least a portion of the device. 9.The electrical plug housing of claim 8, wherein the sensor is configuredto determine whether current is flowing through at least a portion ofthe device by detecting the existence of a magnetic field.
 10. Theelectrical plug housing of claim 1, wherein the electrical plug housingfurther comprises a battery and recharging circuitry, and wherein therecharging circuitry is configured to recharge the battery usinginductive coupling with a conductor carrying alternating current throughat least a portion of the plug housing.
 11. The electrical plug housingof claim 1, wherein the one or more messages transmitted by the radiotransmitter further include information describing a particular deviceclassification type, wherein the particular device classification typeindicates whether the device is either a device that should be leftpowered on or is a device that should be left powered off.
 12. Theelectrical plug housing of claim 1, wherein the operations furthercomprise: determining an average amount of power used by the device overa period of time; and, wherein the one or more messages transmittedusing the radio transmitter include the determined average amount ofpower.
 13. The electrical plug housing of claim 1, wherein the device isa hair dryer, a clothes iron, a curling iron, a television, an electricspace heater, or a refrigerator.
 14. A method comprising: detecting thepower status of a device using a sensor, wherein detecting the powerstatus of the device includes, determining, by the sensor, whether anelectrical current flowing through at least a portion of the device hasbeen detected; responsive to the detection of an electrical currentflowing through at least a portion of the device, generating, by thesensor, information that describes a power status of the device, whereinthe generated information that describes the power status of the deviceincludes information that is indicative of whether the device is poweredon or off; storing, on one or more storage devices, (i) information thatdescribes a device identifier associated with the device and (ii) thegenerated information that describes the power status of the device;receiving, using the radio transmitter, a request, that originates froma mobile application of a user device based on the occurrence of apredetermined triggering condition detected by the mobile application,for the power status of the device; obtaining, by the one or moreprocessors, (i) information that describes the device identifier and(ii) the generated information that describes the power status of thedevice from the one or more storage devices; and transmitting, using theradio transmitter, one or more messages to the user device that include(i) information that describes the device identifier and (ii) generatedinformation that describes the power status of the device, wherein whenthe one or more messages are received and processed by the user device,cause the user device to generate a graphical power indicator for outputon a display of the user device, wherein the graphical power indicatorindicates whether the device has a problematic power status.
 15. Themethod of claim 14, wherein the graphical power indicator indicates thatthe device does not have a problematic power status if the power statusof the device is not to be toggled before a user of the user deviceleaves a property where the device is located.
 16. The method of claim14, wherein the predetermined triggering condition detected by themobile application includes a determination by the mobile applicationthat the user device has left a monitored location.
 17. The method ofclaim 14, wherein the one or more messages transmitted by the radiotransmitter further include information describing a particular deviceclassification type, wherein the particular device classification typeindicates whether the device is either a device that should be leftpowered on or is a device that should be left powered off.
 18. Acomputer-readable storage device having stored thereon instructions,which, when executed by data processing apparatus, cause the dataprocessing apparatus to perform operations comprising: detecting thepower status of a device using a sensor, wherein detecting the powerstatus of the device includes, determining, by the sensor, whether anelectrical current flowing through at least a portion of the device hasbeen detected; responsive to the detection of an electrical currentflowing through at least a portion of the device, generating, by thesensor, information that describes a power status of the device, whereinthe generated information that describes the power status of the deviceincludes information that is indicative of whether the device is poweredon or off; storing, on one or more storage devices, (i) information thatdescribes a device identifier associated with the device and (ii) thegenerated information that describes the power status of the device;receiving, using the radio transmitter, a request, that originates froma mobile application of a user device based on the occurrence of apredetermined triggering condition detected by the mobile application,for the power status of the device; obtaining, by the one or moreprocessors, (i) information that describes the device identifier and(ii) the generated information that describes the power status of thedevice from the one or more storage devices; and transmitting, using theradio transmitter, one or more messages to the user device that include(i) information that describes the device identifier and (ii) generatedinformation that describes the power status of the device, wherein whenthe one or more messages are received and processed by the user device,cause the user device to generate a graphical power indicator for outputon a display of the user device, wherein the graphical power indicatorindicates whether the device has a problematic power status.
 19. Thecomputer-readable storage device of claim 18, wherein the graphicalpower indicator indicates that the device does not have a problematicpower status if the power status of the device is not to be toggledbefore a user of the user device leaves a property where the device islocated.
 20. The computer-readable storage device of claim 18, whereinthe predetermined triggering condition detected by the mobileapplication includes a determination by the mobile application that theuser device has left a monitored location.